CN109713636A - A kind of definite value automatic Check method and device - Google Patents
A kind of definite value automatic Check method and device Download PDFInfo
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- CN109713636A CN109713636A CN201811650010.4A CN201811650010A CN109713636A CN 109713636 A CN109713636 A CN 109713636A CN 201811650010 A CN201811650010 A CN 201811650010A CN 109713636 A CN109713636 A CN 109713636A
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- definite value
- substation
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- condition code
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Abstract
The present invention relates to a kind of definite value automatic Check method and devices.This method carries out compressed encoding to all definite value items first, reduces data volume；Then characteristic value is taken using Encryption Algorithm to compressed data, need to only compare current characteristic value and Standard Eigenvalue with the presence or absence of difference can determine whether definite value has exception；When there is exception, substation's main station system reads the compressed file of this system by the file transfer services of MMS communication protocol, is decoded, compares one by one, finds exception item.This method greatly improves comparison efficiency, reduces workload, efficiently solves definite value in work on the spot and checks heavy workload, is easy the problems such as error, inefficiency.
Description
Technical field
The present invention relates to secondary equipment of intelligent converting station O&Ms and service technique field more particularly to a kind of automatic school of definite value
Kernel method and device.
Background technique
In recent years, with the development of Chinese national economy, various circles of society gradually enhance the dependence of electric power, guarantee power grid
Safety, stablize, reliability service seems most important.Wherein whether protective relaying device sets correct definite value, with entire electricity
There are close connections for net operational safety, generate important influence to the development of electric utility.Not however as electric system
Disconnected development, the changes of operating modes of power grid is very frequent, and the definite value of protective relaying device is also the change needed with the method for operation
Change and adjusts accordingly.
Currently, after many substations' implementations are unattended, under normal circumstances, substation needs to change guarantor in the process of running
The definite value of protection unit, or periodically, after maintenance check definite value, the fortune inspection personnel dozens of kilometres that will drive carry out scene to equipment and repair
Change, hurries back and forth back and forth.This work is not only costly, can also expend a large amount of energy and time of staff.More important is more
Definite value after changing also needs to print to be checked one by one, and workload is huge.By taking the intelligent substation of a 220kV as an example, until
Rare two to three thousand definite values, so more definite values verify heavy workload using artificial, and are easy error.In currently available technology,
There is a small number of systems that automatic Check may be implemented, but verification mode is to use to call definite value together check one by one to local mode,
Efficiency is lower.
Summary of the invention
The present invention checks heavy workload for definite value in work on the spot, is easy the problems such as error, inefficiency, provides one kind
Definite value automatic Check method and device.This method first carries out compressed encoding to all definite value items, reduces data volume；Then to pressure
Data after contracting take feature using MD5 (Message Digest Algrithm 5, message digest algorithm the 5th edition) Encryption Algorithm
Value, the difference for only comparing current characteristic value and Standard Eigenvalue can determine whether definite value has exception, the substation when there is exception
The text that main station system passes through MMS (Manufacturing Message Specification manufactures message specification) communication protocol
The compressed file of this system is read in part transmission service, is decoded, is compared one by one, find exception item, greatly improves comparison
Efficiency effectively reduces workload.
On the one hand, the present invention proposes a kind of definite value automatic Check method, comprising the following steps:
Step 1: the SCD file (Substation that subsystem in substation system analysis is provided by transformer substation system integrator
Configuration Description, whole station system configuration file), substation equipment relevant configuration information is obtained, correlation is matched
Confidence breath includes but not only comprising corresponding communication IP, definite value item, reference path etc.；
Step 2: subsystem in substation timing from be resolved in read step 1 in protective device communication IP, definite value item,
Quote the definite value of each related definite value item such as path, correlation of the reading manner according to the MMS communication protocol in IEC61850 standard
Regulation；
Step 3: the definite value that subsystem in substation system reads step 2 carries out compressed encoding using huffman coding, obtains
To a compressed encoding as a result, and saving；
The shortest code word of average length that huffman coding constructs different prefix according to the probability of character appearance completely, sometimes
Referred to as forced coding.Huffman coding is lossless compression algorithm, can guarantee that data will not lose, and theory of algorithm is mature, compiles
Cheng Shixian is simple.
The basic skills of huffman coding processing herein is the frequency that each symbol occurs in statistical data, probability of occurrence
Bigger symbol obtains shorter byte number, the long byte number of the small distribution of the frequency of occurrences, is compressed with this to data.
Step 4: subsystem in substation system encrypts the coding result in step 3 using md5 encryption algorithm, obtains one
A condition code；
Md5 encryption algorithm can guarantee former data even only one byte variation, obtained characteristic value also has very
Big is different, and the MD5 value length that the data of random length calculate is fixed, and facilitates comparison.
Step 5: the condition code in step 4 is used and is sent to main website, substation in MMS communication protocol by subsystem in substation system
System；
Step 6: substation's main station system receives the condition code of this system transmission；
Step 7: substation's main station system compresses standard definite value using huffman coding；
Step 8: substation's main station system carries out taking characteristic value using the compressed encoding in md5 encryption algorithm steps 7, obtains
New condition code；
Step 9: the condition code that substation's main station system will be calculated in the condition code received in step 6 and step 8
Be compared, see it is whether identical, it is identical then normal, it is different then alert and carry out step 10；
Step 10: the corresponding definite value compressed encoding result of condition code in substation's main station system read step 4；
Step 11: substation's main station system carries out Hofmann decoding to the compressed encoding result that step 10 receives, and obtains
The definite value of each definite value item of the protective device；
Step 12: main website is compared according to the value of the definite value item of self norms with the definite value item definite value that step 11 obtains,
It sees that those are inconsistent, positions exception item.
On the other hand, the present invention proposes a kind of definite value automatic checker, specifically includes: current signature code acquiring unit,
Protective device unit, definite value condition code acquiring unit, definite value check unit.
Current signature code acquiring unit is responsible for parsing the SCD file provided by transformer substation system integrator, obtains substation
Equipment relevant configuration information periodically reads each related definite value item such as communication IP, definite value item, reference path from protective device
The definite value read is carried out compressed encoding using huffman coding, is added using md5 encryption algorithm to coding result by definite value
It is close, obtain a current signature code.It is each related fixed that protective device unit is responsible for providing communication IP, definite value item, quoting path etc.
It is worth the definite value of item.
Definite value condition code acquiring unit is responsible for compressing standard definite value using huffman coding, is then added using MD5
Close compression algorithm coding result carries out taking characteristic value, obtains definite value condition code.
Definite value checks unit and is responsible for the current signature code for obtaining current signature code acquiring unit and the acquisition of definite value condition code
The definite value condition code that unit is calculated is compared, see it is whether identical, it is identical then normal, it is different then alert, and read currently
The corresponding definite value compressed encoding of condition code obtains determining for each definite value item of the protective device as a result, progress Hofmann decoding
Value, compares with the value of the definite value item of standard, positions exception item.
The beneficial effects of the present invention are: on the basis of existing technology, improving comparison efficiency, it is only necessary to compare once i.e.
It can determine whether definite value has exception；Reduce network traffic data, lossless compression is carried out to data, and take characteristic value, reduced
Data volume；Compressing data and decompression, it is known that the occurrence of definite value item when being abnormal.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Below by embodiment, invention is further described in detail.
On the one hand, it the present embodiment provides a kind of definite value automatic Check method, does not need to call together definite value to local, automatically to fixed
Value is checked, and comparison efficiency is greatly improved, and specific steps include:
Step 1: subsystem in substation system analysis SCD file obtains substation equipment relevant configuration information；
Step 2: subsystem in substation system is according to the configuration information after parsing, according to what is provided in IEC61850-7-4 standard
Relevant regulations in model and Q/GDW1396-2012 " IEC61850 engineering relay protection application model ", configure the icd of this system
Model file (IED Capability Description, IED capabilities description file), model file are directed to each guarantor of substation
Protection unit configures the logical device node of a storage attribute code information, and substation's main station system is by reading this logical node
The condition code of corresponding equipment can be obtained；
Step 3: model file in step 2 is imported into main station system by subsystem in substation system, and available of main website is
System relevant configuration information, and according to the MMS communication protocol in IEC61850 standard, realize substation's main station system and son to be monitored
The communication of transformer substation system；
Step 4: due to the text that will not deliver newspaper in active when definite value variation, system is filled using protection is read by the way of actively reading
The definite value set；According to the relevant information obtained in step 1, protective device definite value is periodically called together, timing can be according to scene
Actual demand is configured；
Step 5: based on protective device, subsystem in substation system saves definite value hereof, then uses Hough
Graceful coding carries out compressed encoding；
Step 6: subsystem in substation system carries out taking condition code to compressed encoding file using MD5 algorithm；
MD5 algorithm can summarize are as follows: the information of input be handled with 512 groupings, and each grouping is divided again
It is grouped for 16 32 seats, after a series of processing, there are four 32 grouping compositions for the output of algorithm, by this four 32
One 128 hashed values will be generated after packet concatenation.
Step 7: subsystem in substation system is by the condition code Shang Song substation main station system in step 6；
Step 8: substation's main station system compresses standard definite value using huffman coding, then uses MD5 algorithm
It carries out taking condition code；
Step 9: the condition code that step 8 obtains being compared with the condition code received in step 7, whether identical is seen；
It is identical then normal, it is different then alert, and carry out step 10；
Step 10: calling the compressed encoding file of the protective device together main station system by the way of file transfer services；
Step 11: main station system is decoded to local compressed file is called together, obtains each definite value item；
Step 12: each definite value item being compared with standard value, positions exception item.
On the other hand, the present embodiment provides a kind of definite value automatic checker, specifically include:
Current signature code acquiring unit parses the SCD file provided by transformer substation system integrator, obtains substation equipment
Relevant configuration information periodically reads each related definite value such as the communication IP being resolved to, definite value item, reference path from protective device
Definite value, by the definite value read using huffman coding carry out compressed encoding, using md5 encryption algorithm to coding result into
Row encryption, obtains a current signature code.
Protective device unit is responsible for providing the definite value of each related definite value item such as communication IP, definite value item, reference path.
Definite value condition code acquiring unit compresses standard definite value using huffman coding, is then calculated using md5 encryption
Method compressed encoding result carries out taking characteristic value, obtains definite value condition code.
Definite value checks unit, the current signature code that current signature code acquiring unit is obtained and definite value condition code acquiring unit
The definite value condition code being calculated is compared, see it is whether identical, it is identical then normal, it is different then alert, and read current signature
The corresponding definite value compressed encoding of code obtains the definite value of each definite value item of the protective device as a result, progress Hofmann decoding, with
The value of the definite value item of standard compares, and positions exception item.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of definite value automatic Check method characterized by comprising step 1: subsystem in substation system analysis is by substation
The SCD file that system integrator provides, obtains substation equipment relevant configuration information；Step 2: subsystem in substation timing is from guarantor
Protection unit reads the definite value of each definite value item；Step 3: the definite value that subsystem in substation system reads step 2 carries out compression volume
Code, obtains compressed encoding result；Step 4: subsystem in substation system encrypts the coding result in step 3, obtains feature
Code；Step 5: subsystem in substation system will be sent to substation's main station system in the condition code in step 4；Step 6: main website, substation
System receives the condition code of this system transmission；Step 7: substation's main station system uses fixed to standard with step 3 same way
Value carries out compressed encoding；Step 8: substation's main station system, which is used, carries out the compressed encoding in step 7 with step 4 same way
Characteristic value is taken, condition code is obtained；Step 9: substation's main station system calculates the condition code received in step 6 with step 8
Obtained condition code is compared, identical then normal, and carries out step 10；Step 10: in substation's main station system read step 4
The corresponding definite value compressed encoding result of condition code；Step 11: the compressed encoding knot that substation's main station system receives step 10
Fruit is decoded using mode corresponding with step 3, obtains the definite value of each definite value item；Step 12: substation's main station system is according to certainly
The value of body standard definite value item is compared with the definite value item definite value that step 11 obtains, and searches different item, positions exception item.
2. a kind of definite value automatic Check method according to claim 1, which is characterized in that the step 1 includes passing through parsing
Mode obtain substation equipment relevant information, relevant information include but not only comprising corresponding communication I P, definite value item, draw
Use path.
3. a kind of definite value automatic Check method according to claim 1, which is characterized in that the step 1 includes according to parsing
Information, according to phase in the model provided in I EC61850-7-4 standard and " I EC61850 engineering relay protection application model "
Regulation is closed, the i cd model file of this system is configured, model file configures a storage spy for each protective device of substation
Levy the logical device node of code information.
4. a kind of definite value automatic Check method according to claim 1, which is characterized in that step 2 timing is filled from protection
Setting and reading the definite value of each definite value item includes relevant regulations of the reading manner according to the MMS communication protocol in I EC61850 standard.
5. a kind of definite value automatic Check method according to claim 1, which is characterized in that the step 3 includes compressed encoding
Mode is huffman coding.
6. a kind of definite value automatic Check method according to claim 1, which is characterized in that the step 4 includes cipher mode
For md5 encryption algorithm.
7. a kind of definite value automatic Check method according to claim 1, which is characterized in that the step 5 includes in condition code
Being sent to substation's main station system mode is using MMS communication protocol.
8. a kind of definite value automatic Check method according to claim 3, which is characterized in that allocation models file includes by model
File is imported into main station system.
9. a kind of definite value automatic checker characterized by comprising
Current signature code acquiring unit is responsible for the SCD file that parsing is provided by transformer substation system integrator, obtains substation equipment
Relevant configuration information periodically reads the definite value for being resolved to related definite value item from protective device, by the definite value read using suddenly
Fu Man coding carries out compressed encoding, is encrypted using md5 encryption algorithm to coding result, obtains current signature code.
Protective device unit is responsible for providing the definite value of each related definite value item such as communication I P, definite value item, reference path；
Definite value condition code acquiring unit is responsible for compressing standard definite value using huffman coding, then be calculated using md5 encryption
Method compressed encoding result carries out taking characteristic value, obtains definite value condition code；
Definite value checks unit, is responsible for the current signature code for obtaining current signature code acquiring unit and definite value condition code acquiring unit
Obtained definite value condition code is compared, identical then normal, different then read the corresponding definite value compressed encoding knot of current signature code
Fruit carries out Hofmann decoding, obtains the definite value of each definite value item of the protective device, carries out pair with the value of the definite value item of standard
Than positioning exception item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650010.4A CN109713636B (en) | 2018-12-31 | 2018-12-31 | Method and device for automatically checking setting value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650010.4A CN109713636B (en) | 2018-12-31 | 2018-12-31 | Method and device for automatically checking setting value |
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| CN109713636B CN109713636B (en) | 2020-01-17 |
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| CN201811650010.4A Active CN109713636B (en) | 2018-12-31 | 2018-12-31 | Method and device for automatically checking setting value |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110912877A (en) * | 2019-11-09 | 2020-03-24 | 许继集团有限公司 | Data transmitting and receiving method and device based on IEC61850 model in transformer substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912877A (en) * | 2019-11-09 | 2020-03-24 | 许继集团有限公司 | Data transmitting and receiving method and device based on IEC61850 model in transformer substation |
| CN110912877B (en) * | 2019-11-09 | 2022-01-11 | 许继集团有限公司 | Data transmitting and receiving method and device based on IEC61850 model in transformer substation |
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| CN109713636B (en) | 2020-01-17 |
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